Diagnostic Code Index
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC P061C | P061C: Control Module Engine Speed Performance |
| DTC P0641 | P0641: 5-Volt Reference Circuit |
| DTC P0651 | P0651: 5 Volt Reference 2 Circuit |
| DTC P159C | P159C: Power Take-Off (PTO) Remote Engine Shutdown Switch Circuit |
| DTC P251A-P251F | P251A: Power Take-Off (PTO) Enable Switch Circuit P251E: Power Take-Off (PTO) Engine Shutdown Control Circuit Low Voltage P251F: Power Take-Off (PTO) Engine Shutdown Control Circuit High Voltage |
| DTC P253D | P253D: Power Take-Off (PTO) Relay Feedback Circuit High Voltage |
| DTC P258E | P258E: Power Take-Off (PTO) Enable Switch Performance |
| DTC P260A-P260C | P260A: Power Take-Off (PTO) Relay Control Circuit P260B: Power Take-Off (PTO) Relay Control Circuit Low Voltage P260C: Power Take-Off (PTO) Relay Control Circuit High Voltage |
| DTC P260D | P260D: Power Take-Off (PTO) Engaged Indicator Control Circuit |
| DTC C0550 | C0550 32: Electronic Control Unit (ECU) Performance General Memory Failure C0550 34: Electronic Control Unit (ECU) Performance RAM Failure C0550 35: Electronic Control Unit (ECU) Performance ROM Failure C0550 39: Electronic Control Unit (ECU) Performance Internal Electronic Failure C0550 4B: Electronic Control Unit (ECU) Performance Calibration Not Learned |
| DTC C0899 or C0900 | C0899 03: Device Voltage Low C0900 07: Device Voltage High |